$ git clone -n https://src.fedoraproject.org/rpms/rubygem-msgpack.git /var/lib/mock/f40-build-2323055-58696/root/chroot_tmpdir/scmroot/rubygem-msgpack
Cloning into '/var/lib/mock/f40-build-2323055-58696/root/chroot_tmpdir/scmroot/rubygem-msgpack'...
$ git fetch origin e5627f2364405e0b35a20b7994f7bb9acd541524:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-msgpack
 * [new ref]         e5627f2364405e0b35a20b7994f7bb9acd541524 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e5627f2 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild